0025c1fd80] [c003a430] system_call_exception+0x120/0x270
[c00025c1fe20] [c000c540] system_call_common+0xf0/0x27c
Cc: Christoph Hellwig
Cc: Dan Williams
Cc: linux-nvdimm@lists.01.org
Cc: Jason Gunthorpe
Signed-off-by: Ralph Campbell
Reported-by: Aneesh Kumar K.V
Reviewed-
On 10/22/20 11:46 PM, Christoph Hellwig wrote:
On Thu, Oct 22, 2020 at 11:19:43AM -0700, Ralph Campbell wrote:
On 10/22/20 8:41 AM, Ira Weiny wrote:
On Thu, Oct 22, 2020 at 11:37:53AM +0530, Aneesh Kumar K.V wrote:
commit 6f42193fd86e ("memremap: don't use a separate devm a
_DEV_PAGEMAP_OPS isn't defined. I have only compile tested the
following.
Signed-off-by: Ralph Campbell
---
mm/memremap.c | 39 ---
1 file changed, 16 insertions(+), 23 deletions(-)
diff --git a/mm/memremap.c b/mm/memremap.c
index 73a206d0f645..16b2fb482da1
There are several places where ZONE_DEVICE struct pages assume a reference
count == 1 means the page is idle and free. Instead of open coding this,
add helper functions to hide this detail.
Signed-off-by: Ralph Campbell
Reviewed-by: Christoph Hellwig
Acked-by: Darrick J. Wong
Acked
On 10/7/20 1:25 AM, Jan Kara wrote:
On Tue 06-10-20 16:09:30, Ralph Campbell wrote:
There are several places where ZONE_DEVICE struct pages assume a reference
count == 1 means the page is idle and free. Instead of open coding this,
add a helper function to hide this detail.
Signed-off
There are several places where ZONE_DEVICE struct pages assume a reference
count == 1 means the page is idle and free. Instead of open coding this,
add a helper function to hide this detail.
Signed-off-by: Ralph Campbell
Reviewed-by: Christoph Hellwig
---
I'm resending this as a separate patch
On 7/12/20 9:27 AM, Dan Williams wrote:
The 'struct resource' in 'struct dev_pagemap' is only used for holding
resource span information. The other fields, 'name', 'flags', 'desc',
'parent', 'sibling', and 'child' are all unused wasted space.
This is in preparation for introducing a
On 9/17/19 8:31 AM, Aneesh Kumar K.V wrote:
vmem_altmap_offset() adjust the section aligned base_pfn offset.
So we need to make sure we account for the same when computing base_pfn.
ie, for altmap_valid case, our pfn_first should be:
pfn_first = altmap->base_pfn + vmem_altmap_offset(altmap);
/
fixing a locking bug involving caller and callee.
Signed-off-by: Christoph Hellwig
I see where you are going with this and it
looks like straightforward code movement so,
Reviewed-by: Ralph Campbell
---
drivers/gpu/drm/nouveau/nouveau_svm.c | 54 ++-
include/l
-by: Christoph Hellwig
Reviewed-by: Ralph Campbell
Probably should update the "Return:" comment above
hmm_range_snapshot() too.
---
mm/hmm.c | 8 +++-
1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/mm/hmm.c b/mm/hmm.c
index c85ed7d4e2ce..d125df698e2b 100644
---
oph Hellwig
Reviewed-by: Ralph Campbell
---
drivers/gpu/drm/nouveau/nouveau_svm.c | 2 +-
include/linux/hmm.h | 11 +--
mm/hmm.c | 6 +-
3 files changed, 7 insertions(+), 12 deletions(-)
diff --git a/drivers/gpu/drm/nouv
page(entry);
+ ret = page->pgmap->ops->migrate(vmf);
This needs to either initialize "page" or be changed to "vmf->page".
Otherwise, it is a NULL pointer dereference.
} else if (is_hwpoison_entry(entry)) {
re
On 6/13/19 12:44 PM, Jason Gunthorpe wrote:
On Thu, Jun 13, 2019 at 11:43:21AM +0200, Christoph Hellwig wrote:
The code hasn't been used since it was added to the tree, and doesn't
appear to actually be usable. Mark it as BROKEN until either a user
comes along or we finally give up on it.
Just noticed this by inspection.
I can't say I'm very familiar with the code.
On 4/17/19 11:39 AM, Dan Williams wrote:
Sub-section hotplug support reduces the unit of operation of hotplug
from section-sized-units (PAGES_PER_SECTION) to sub-section-sized units
(PAGES_PER_SUBSECTION). Teach
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